5060 blocked issue

[v164]

Originally Posted by advant

Sorry I should have been more specific in my original post.

I was actually referring to Martin's previous post where
he wrote:

"voxalot has re-directs setup for ports:

4060
3060
2060"

I believe simple redirection of the external 4060/3060/2060
ports at the SIP proxy's firewall to the internal 5060 port
does not work. This is why there have been posts from
members about not being able to receive calls when they
are registered to a port other than 5060.

The SIP proxy should actually listen on those ports for
it to know that the incoming traffic actually came on
a specific port.

I understand what you're saying.

Some solutions:

A. VoXaLot makes some modifications to "actually listen on those ports", and use those ports when sending SIP messages.

or

B. You, somehow, intercept your outbound packets bound for port 5060, and change the destination port to 4060 (I can't think of an easy way of doing this).

or

C. You, somehow, intercept the inbound packet from us.voxalot.com, and manually insert the ":4060" in the "Via" and/or "Record-Route:" header. This will cause your ATA to send the reply to us.voxalot.com:4060.

(You could do that in a similar way to how I'm touching up my VSP's improperly-formatted INVITE messages on the fly:
http://forum.voxalot.com/voxalot-sup...dial-ip-3.html )

or

D. Use a VPN, or some other method to relay your packets around the port 5060 block.

or

E. Use IAX to access a service which will connect to/from SIP.